player_dmg

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class player_dmg : MonoBehaviour
{
    [Header("Vie")]
    public float invTimer = 0.6f;
    public int maxHP = 100, HP, DEF;
    public float knockDelay;
    [Header("Sons")]
    public AudioClip[] hurtSounds;
    AudioSource audsource;

    Coroutine invCor, knocked;
    SpriteRenderer spre;
    player_input pl_input;
    player_mvt pl_mvt;
    Rigidbody2D rb;

    void Start()
    {
        audsource = GetComponent<AudioSource>();
        spre = GetComponent<SpriteRenderer>();
        pl_input = GetComponent<player_input>();
        pl_mvt = GetComponent<player_mvt>();
        rb = GetComponent<Rigidbody2D>();

        HP = player_stats.MAXHP();
        StartCoroutine(HPCheck());
    }

    IEnumerator HPCheck()
    {
        int hp = HP;
        while(true)
        {
            yield return new WaitUntil(() => HP != hp);
            hp = HP;

            if(HP >  player_stats.MAXHP())
            {
                HP =  player_stats.MAXHP();
            }
        }
    }


    void OnTriggerEnter2D(Collider2D target)
    {
        if(target.gameObject.tag == "noDmg") return;
        if(target.gameObject.layer == 8 || target.gameObject.layer == 15) GetDmg(target);
    }

    void OnTriggerStay2D(Collider2D target)
    {
        if(target.gameObject.tag == "noDmg") return;
        if(target.gameObject.layer == 8 || target.gameObject.layer == 15) GetDmg(target);
    }

    public void GetDmg(int dmg, float knock, Collider2D target)
    {
        if(invCor != null) return;
        GetInv();

        SendMessage("GotHit", null, SendMessageOptions.DontRequireReceiver);

        if(audsource != null && hurtSounds.Length > 0)
        {
            audsource.clip = hurtSounds[Random.Range(0,hurtSounds.Length)];
            audsource.Play();
        }

        Vector2 knockPos = target.bounds.center;
        if(knocked == null)
        {
            knocked = StartCoroutine(KnockBack(knock, knockPos));
        }

        HP -= CalcDmg(dmg);
    }

    public void GetDmg(Collider2D target)
    {
        monster_engine mnr = target?.attachedRigidbody?.GetComponent<monster_engine>();
        if (mnr == null) return;

        if(invCor != null) return;
        GetInv();

        SendMessage("GotHit", null, SendMessageOptions.DontRequireReceiver);

        if(audsource != null && hurtSounds.Length > 0)
        {
            audsource.clip = hurtSounds[Random.Range(0,hurtSounds.Length)];
            audsource.Play();
        }

        Vector2 knockPos = target.bounds.center;
        if(knocked == null)
        {
            knocked = StartCoroutine(KnockBack(mnr.Knockback, knockPos));
        }

        HP -= CalcDmg(mnr.DMG);
    }

    public void GetInv()
    {
        if(invCor != null) return;
        invCor = StartCoroutine(invCoroutine());
    }

    IEnumerator KnockBack(float knockback, Vector2 hitPos)
    {
        pl_input.enabled = false;
        pl_mvt.can_move = false;

        Vector2 direction = (Vector2)transform.position - hitPos;
        Vector2 knk = direction.normalized * KnockCalc(knockback, timst.DEF(DEF));
        //print("base kb: " + knockback + ", dir: " + direction.normalized + "\n knb: " + KnockCalc(knockback, timst.DEF(DEF)) + ", total: " + knk + ", delay: " + knockDelayCalc());

        if(knockDelayCalc() != 0)
        {
            rb.AddForce(knk, ForceMode2D.Impulse);
            print(rb.angularVelocity);
        }

        yield return new WaitForSeconds(knockDelayCalc());

        pl_input.enabled = true;
        pl_mvt.can_move = true;
        knocked = null;
    }

    float knockDelayCalc()
    {
        float knk = knockDelay;
        float def = timst.DEF(DEF)/33;

        if(knk - def < 0) return 0;
        return knk - def;
    }

    float KnockCalc(float knockback, int def)
    {
        float modifier = def - 33;
        if(modifier < 1) modifier = 0;

        return (knockback - modifier < 0)? 0 : knockback - modifier;
    }

    IEnumerator invCoroutine()
    {
        Color cola = spre.color;
        Color colb = cola;
        colb.a = 0.5f;

        spre.color = colb;
        yield return new WaitForSeconds(invTimer);
        spre.color = cola;

        invCor = null;
    }


    int CalcDmg(int dmg)
    {
        int def = player_stats.DEF();
        if(def < 0) def = 0;

        float DMG = dmg - def * 0.75f;
        if(DMG < 1) DMG = 1;

        return (int)DMG;
    }

    public void ChangeAudio(AudioClip[] newhurt)
    {
        hurtSounds = newhurt;
    }

}